Active clinical trials for "Strabismus"

In this study, the surgical outcomes of lateral rectus plication and resection techniques on patients with residual esotropia will be compared. Methods: In this randomized clinical trial, a total of 57 patients with residual esotropia (31 females and 26 males) who were candidate for lateral rectus resection are going to be included and randomized into plication and resection groups. The inclusion criteria will be residual esotropia after uni- or bilateral medial rectus recession, or unilateral recession and resection (R&R). Subjects with a history of prematurity, lack of central fixation, extraocular muscle palsy, systemic, ocular disorders, follow up less than three months will be excluded. A comprehensive ophthalmic examinations are going to be conducted preoperatively and at 1, 3 and 6 months' follow-ups. Surgical success rate will be considered in cases with a postoperative eso- or exotropia ≤10pd.

Objective: To find out how much visual improvement is possible in severe amblyopia using full-time occlusion therapy with an eye patch and to see if improvement is influenced by the patient's age. Methods: An interventional clinical trial of 115 consecutive cases with unilateral, severe amblyopia was conducted at a tertiary referral center from Jan 2010 to Oct 2012. Patients were divided into three age groups: 3-7 years (n= 38), 8-12 years (n=41), 13-35 years (n=36). After a complete ophthalmological examination by a single ophthalmologist, cases with organic visual loss were excluded; cases with previous part-time occlusion therapy that had failed were included in the study. Patients were given optimal refractive correction for a month, followed by full-time occlusion therapy along with near visual activities for 3-4 hours/day. The therapy was continued until maximum visual recovery was achieved (6/6 Snellen's). Therapy was gradually reduced and stopped. Patients were followed-up regularly for the next 18 months.

This study was designed to investigate pre-operatively measured parameters of various anaesthetic regimes, iris color, sex, age, surgical time, severity of Marcus-Gunn Pupil (MGP), type of mechanical stimulation of eye, and number of extraocular muscle (EOM) under tension as predictors of significant OCR in pediatric strabismus surgery.

Visual screening is necessary among pre-school children as they found themselves in a critical period of visual developement. To date, there are no national vision screening program that has been implemented nationwide. Vision is a pilot feasibility multicentric cluster study comparing the sensitivity of "AFSOP 3 dimensional visual screening protocol in a population of 3 to 4-year-old pre-school children conducted in 4 kindergarten preschools in Paris with gold-standard ophthalmic examination confirmation.

Patients with consecutive exotropia will be managed by medial rectus muscle advancement +/- resection or medial rectus muscle advancement +/- lateral rectus recession

Every year over 1,000 children undergo eye muscle surgery provided by physicians at this institution. For many of these children this is not and will not be the only surgical procedure for eye muscle correction. All of these children will experience differing degrees of postoperative pain. The pain associated with strabismus surgery is due to the manipulation in the conjunctival area and further handling of Tenon's capsule, sclera and the stretching of the eye muscle . Research has demonstrated that repeated painful procedures result in increased anxiety and increased pain. Previous studies have demonstrated that children experiencing preoperative anxiety are more likely to have increased postoperative pain . This increased preoperative anxiety may also contribute to sleep difficulties and increased analgesic consumption. Depending on the age of the child, different methods are used to reduce anxiety such as distraction, child life services, or anti-anxiolytic agents. In addition to pain, children undergoing strabismus surgery frequently experience postoperative nausea and vomiting (PONV).This increased incidence of nausea and vomiting is thought to be related to the use of opiates for pain control. Short acting opiates are used preferentially at this hospital in the belief that this reduces recovery issues of sedation and PONV. Preliminary data, however, suggests no difference in recovery outcomes for fentanyl versus hydromorphone. The purpose of this study is to investigate the optimal analgesia to create a standardized approach for pain management in pediatric patients undergoing surgery for strabismus.

Thirty-four subjects with constant exotropia were included. Two independent ophthalmologists measured the angle of ocular deviation using alternate prism cover test (APCT). The video files and data with the changes in ocular deviation during the alternate cover test were obtained using video-oculography (VOG). To verify the accuracy of VOG, Investigator compared the value obtained using VOG and the angle of a rotating model eye, and subsequently made a new linear equation using these data. The calculated values obtained using VOG were compared with those obtained using APCT to determine the diagnostic accuracy of VOG.

The strabismus impacts binocular visual acuity and stereoscopy. Thus, driving capacities of patients with strabismus may be reduced. The goal of this work is to study the possible amelioration of driving ability after strabismus surgery and to compare the driving capacities of patients with strabismus to a normal population; Patients will be tested before and after strabismus surgery using a driving simulator, binocular visual field and binocular visual acuity.

Pediatric eye patients receive infrared photoscreener screening and skiascopy as a part of routine examination to compare ability to detect amblyopia risk factors.

The purpose of this project is to compare the performance of the Pediatric Vision Scanner (PVS) with the Gold Standard Examination to determine the effectiveness of the PVS at detecting amblyopia and strabismus.